Galaxy Rasboras, also known as Celestial Pearl Danio, are a super popular freshwater nano fish. The scientific name for Galaxy Rasboras is Celestichthys margaritatus.  Galaxy Rasboras are very shy and are best kept with bottom-feeding fish so that they can have adequate food. They can usually be kept safely with shrimp due to their peaceful temperament! Their vibrant color adds color and activity to planted tanks.  Their coloration is even better when kept in groups of 6 or more.